marcos valentine wrote:
This free memory can go away in less than a second
It's depends of many things. But you need to pay attention on this variables
https://mariadb.com/kb/en/library/mariadb-memory-allocation/
Thanks, that´s an interesting page.
It tells you to turn off hyperthreading. At some other place on the
mariadb website, I´ve been reading it´s generally a good idea to
leave it turned on for mariadb.
Now which is true?
In my db servers i use nagios to monitor when "free" and "available" ram is
less than 80% warning state and less than 5% critical.
Hmm, nagios, yes, I should look into that.
so I figured why not use as much as possible --- just not too much, and
this is borderline.
You can use the rule always 80% used for safe. But 20% of 46GB could be too
much ram wasted.
It would be a pity to waste it. I think 128GB would be ideal, and the
machine might even get that once I get to shuffle the RAM sticks
around between different machines. I still wouldn´t want to waste any.
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